CVE-2023-36053 (GCVE-0-2023-36053)
Vulnerability from cvelistv5 – Published: 2023-07-03 00:00 – Updated: 2025-11-04 17:12
VLAI
EPSS
VEX
Summary
In Django 3.2 before 3.2.20, 4 before 4.1.10, and 4.2 before 4.2.3, EmailValidator and URLValidator are subject to a potential ReDoS (regular expression denial of service) attack via a very large number of domain name labels of emails and URLs.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-22 16:03 UTC
CWE
- n/a
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
9 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| debian | debian_linux |
Affected:
10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
||
| fedoraproject | fedora |
Affected:
37
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
||
| djangoproject | django |
Affected:
*
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* |
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"date": "2026-09-14",
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"id": "CVE-2023-36053",
"lastModified": "2024-11-21T08:09:14.967",
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T10:19:05+00:00",
"cve": "CVE-2023-36053",
"id": "CVE-2023-36053",
"initial_release_date": "2023-07-03T08:00:00+00:00",
"product_status:fixed": "24",
"product_status:known_affected": "28",
"product_status:known_not_affected": "2424",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "python-django: Potential regular expression denial of service vulnerability in EmailValidator/URLValidator",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-36053.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-25T02:39:05Z",
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"id": "CVE-2023-36053",
"initial_release_date": "2023-07-12T01:57:36Z",
"product_status:recommended": "28",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-36053",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-36053.json",
"version": "17"
},
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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